sulc84
lc power 500w is enough,i think ?
Enough for what, you didn't tell us the specs of your planned PC. Also, try not to look for a minimum, there is a danger running a PSU at peak load, so give yourself a gap like a 20% overhead.
Try not to limit focus on the wattage alone; since your CPU, GPU, drives and fans all draw power from 12v; look at the PSU label for the max allowed 12v wattage and divide by 12v to get the max allowed amperage, then compare with what you're trying to power. Have a look at
this post I made for someone else who asked a similar question about another configuration, the same rules still apply to you. Use the GeForce.com link in that link to find your graphics card, then find the "max board power" (which is actual full load max) at the bottom of the specifications tab. Add up the 12v amps and look for a PSU with that many or better.
I once had a 580W unit with two rail of 18A and 20A, but the label said the max alloed wattage for 12v was 360W, or just 30A. Let's say you had a 40A at 12v need, well that is 40 x 12 = 480W-- my old PSU would qualify at wattage being a 580W unit, but it would fail due to not enough amperage. You can't just assume the wattage label tells you enough. You got to look for a unit with enough amps first; if this makes this complication, get over it because the PSU is the most important part of the computer. You got to do the math.
Note : These numbers will be somewhat higher than those Guru3D links show, that is because the Gruru3D tests even say that they are only stressing the GPU for it's full load in practical everyday numbers, they aren't stressing everything, thus the CPU's numbers are lower than they are.
Use the Guru3D numbers and my method of adding amps as a guide, don't only get a the PSU for the exact wattage.
